diff --git a/xml/System.Windows/Clipboard.xml b/xml/System.Windows/Clipboard.xml
index fc65069e451..90e30bb46ae 100644
--- a/xml/System.Windows/Clipboard.xml
+++ b/xml/System.Windows/Clipboard.xml
@@ -464,6 +464,7 @@
   
  ]]></format>
         </remarks>
+        <exception cref="T:System.Runtime.InteropServices.ExternalException">The Clipboard could not be opened. This typically occurs when the Clipboard is being used by another process.</exception>
         <exception cref="T:System.ArgumentNullException">
           <paramref name="format" /> is <see langword="null" />.</exception>
         <altmember cref="M:System.Windows.Clipboard.GetAudioStream" />
@@ -871,6 +872,13 @@
   
  ]]></format>
         </remarks>
+        <exception cref="T:System.Runtime.InteropServices.ExternalException">The Clipboard could not be cleared. This typically occurs when the Clipboard is being used by another process.</exception>
+        <exception cref="T:System.ArgumentNullException">
+          <paramref name="format" /> is <see langword="String.Empty" />.
+
+-or-
+
+<paramref name="format" /> or <paramref name="data" /> is <see langword="null" />.</exception>
         <altmember cref="M:System.Windows.Clipboard.ContainsData(System.String)" />
         <altmember cref="M:System.Windows.Clipboard.GetData(System.String)" />
       </Docs>